Type-writing machine.



G. F. HANDLEY.-

TYPE WRITING MACHINE.-

APPLICATION FILED DEC. I2 1916,. LQMHQQ, Patented Oct. 30,1917.

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TYPE WRITING MACHINE. APPLICATION FILED DECAL-19m Patented Oct. 30,1917.

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GEOEGE F. HAHL'ELEY, 0F GLENDALE, NEW YORK, ASSIGNQR- TO ROYAIJ TYJEEWEITEIK.

COMPANY, INC., 01: NEW YORK,

N. Y., A. CORPORATION OF NEW YORK.

TYPE-Ji'RlCTING MACHINE.

Specification of Letters Patent.

Patented Got. 3%. 191?.

Application filed December 12, 1916. Serial No. 136,433.

To all whom it may concern:

Be it known that I, Gnoncn a citizen of the United Eitates, residing at Glendale, Long Island, State of New York, have invented certain new and useful lmprovements in Type-Writing Machines, of which the following is a specification.

This invention relates to the mechanism of type-writing machines for effecting changes in the letter case printing and particulerly to mechanism of this class in which a key lever is employed for shifting the platen or carriage from lower to upper case position. In such mechanism latches operated by shift keys have heretofore been employed for per and lower case positions.

In a copendin 1 application for patent filed by Edward B. less, August 24, 1916, No. 116,604, which has matured into Patent 1,226,770, dated May 22, 1917, case shifting mechanism is shown in which means is provided forcushioning the movement of the shift key after the shifting operation is coinplete, said mechanism comprising an incased spring placeda'undcr initial compression but which is further compressed during the final movement of the shift key.

According to my invention instead of employing a spring cushion in the form shown in said application No. 116,604:, I provide spring cushioning means of improved construction for a similarpurpose but which enables me to use a stronger spring which is capable of better and more convenient adjustlnent. Instead the carriage supporting and raising mechanism to the shift key lever by means of a yielding link I connect said mechanism with a lever pivotally mounted on the shift key lever and connected with said shi l't key lever by a spring which-'s adjustable to vary its tension and which serves to cushion the shift key lever during its movement after the shifting operation is complete.

Letters Patent of the United States, No. 984,284, granted l chruary 14-, llll, to the Royal Typewriter Compan as the assignee of J. F. lllcliirney, show case shit'lingniechanism in which a latch operated lay the shift key is employed for holding the carriage in either its 'aised or lowered position, andv I preferably employ such a latch lvly improvements are preferably associated with F. HANDLEY,

holding the carriage in both upof directly connecting devices for locking the shift key in its de-- pressed position.

in the accompanying drawings l have shown my improvements applied to a Royal Standard Machine of Well known construction. I

Figure 1 is a view in longitudinal section of the machine frame or casing and it shows the carriage and the carriage shifting mechanism in side elevation. This figure of the drawing shows the carriage in lower case position.

Fig. 2 is a detail plan view showing how two shift keys may be employed, one on each side of the machine, for raising and lower ing the carriage and also shows the shift lock key associated with one of the shift keys.

Fig. 3 is a detail view in side elevation showing partly how the carriage is support ed at one end by an adjustable stop when in its lowered position.

Fig. 4- is a view similar to Fig. 1 but shows the carriage in elevated position and it indicates the position of the carriage raising and lowering mechanism when the carriage is raised.

Fig. 5 is a detail view on an enlarged scale showing how the cushioning device is associated with the shift key and the links which connect it with the locking latch and the carriage raising and lowering mechanism.

Fig. 6 is a detail view showing how the shift lock key is associated with looking devices for holding the shift key in depressed position.

Fig. 7 is a view similar to Fig. 6 but shows the shift key depressed and the shift lock key in'position to lock the shift key in do, pressed position.

The carriage A supports a platen B and is supported at its front on a shift rail C which has downwardly extending arms D connected at their lowerends to links E pivotedto the machine frame at e. Levers F are pivotally connected to the arms I) near their upper ends and the rear ends of the lovers are pivotally connected with the machine frame at f. It will be understood that there is a pair of links E and a pair of lovers l those on one side of the machine only beingshown.

The shift lever H is pivoted at h to the spring is held under tension machine frame and carriesa finger key it. A shift locking lever and key I are associated with the shift key lever in the usual way. In Figs. 1 and 2 of the drawings the shift lock mechanism and the locking mechanism has been omitted for the sake of clearness but it is shown in Figs. 6 and 7. The lever H is in bell crank form and is connected by a rod K with the locking latch G engaging a lug d for holding the carriage in either upper case or lower case position and said lever H is connected with one of the levers F by links or rods associated with adjusting and cushioning devices of improved construction which will be hereinafter described. As indicated in Fig. 2, more than one shift lever may be employed. Preferably a single locking lever is used.

A spring S connected with one of the levers F at s and adjust-ably connected with the machine frame at s is employed for counterbalancing to some extent the weight of the carriage in the usual way.

The shift lock lever, I operates the lock- I ing lever J pivoted to the machine frame at j and having an end 7' normally engaged by a pin 2' on the shift lock lever I. Said lever J is formed with a recess 7'', and said lever is held in the osition shown in Fig. 6 by a spring 7' en the shift lever H is depressed and the levers I and J are also depressed the parts occupy the position shown in Fig. 7, when, as will be observed, the pin a", on the lever H, enters the recess j and the case shifting lever is held in depressed position. By merely depressing the shift key the pin i will be disengaged from the lever J and the spring 9' will cause the lever J and the shift lock lever to rise, thus releasing the case shift lever which will also rise to normal position. The carriage will then lower and the latch will engage the lug d. The manner in which the latch G operates to hold the carriage in either elevated or depressed position is similar to that described in the McBirney Patent No. 984,284., before mentioned. Normally the latch G is in the position shown in Fig. 1 and engages the lugcl on one of the arms D. Said latch is pivoted to the machine frame at d and to its lower end is connected a light spring at", the opposite end of which is formed with a loop (Z surrounding a pin cl. When the parts are in the position shown in Fig. 1, the spring is not under tension but when the carriage is raised (Fig. 4) the and serves to assist in quickly withdrawing the latch from the lug (Z when the shift key is raised. '1. indicates one of a pair of stops for limiting the upward movement of the carriage and T indicates one of the stops for limiting its downward movement.

The shift key lever H is not directly connected with thelevers F and latch Gr as heretofore, but its upturned end it carries a lever U having apart a substantially parallel with the upturned end of the lever and a curved or segmental portion a extending forwardly from its lower end. The lever U is pivotally connected near its lower end at w with the lever H and it is provided about midway between its upper and lower ends with a hole or opening a through which extends a pin it carried by the part 71. of the lever ll. It will be observed that the diameter of the pin is considerably smaller than that of the opening.

A spring N is connected at one end to the upper end of the shift key lever and at its opposite end it is adjustably connected with the curved or segmental portion of the lever IT. The spring normally holds the lever U in the position shown in Fig. 1 at which time the pin 16* engages the rear wall of the hole M but the construction is such that at the proper time, as hereinafter described, the lever U can rock on the lever H in the manner indicated in Fig. 5 against the force of the spring Vi. The upper end of the lever l is connected by link or rod K with the latch G and the said lever U is also connected by a rod L with one of the levers F.

The connection between the rod L and the lever F is preferably made by forming a loop a .in the rear end of the rod which engages a pin f on the lever F and this loop at its front end is connected with a spring 9 which is attached at its rear end to the pin 7". lVhen the carriage is lifted the spring 5/ is under tension, as indicated in. when the carriage is lowered the spring causes the rear end of the loop to separate from the pin a short distance so that when the shift lever is again depressed there is a little lost motion before the rear end of the loop engages the pin f and thus before the raising operation of the carriage commences.

In this way time is given for the latch G to be disengaged from the carriage before the latter commences to rise.

The part a of the lever U is disposed eccentricaily and this part a is preferably toothed as indicated to facilitate the adjustment of the spring N. By varying the point of connection of the spring with the arm a the tension of the spring may be varied inasmuch as the curve of the arm is eccentric to the point :1 where the inner end of the spring is attached to the shift lever.

Fig. l of the drawing shows the mechanisni in normal or lower case position. At

this time the latch G engages the lug (Z so as to prevent the carriage from being ac cidcntally or prematurely raised. If the shift l'cy level be depressed the mechanism will assume the condition shown in FigzA, the latch (i being first released from the lug (Z and then the lovers F being operated so raise the carriage to the position shown.

Fig. 4, but

The carriage is thus raised against the stops '1 without changing the tension of the spring;

\V, but a further movement may be given to the shift key as indicated by dotted lines hole a of the lever U to the front wall of tached to the rock shaft h.

said hole which limits the movement of the pin. This slight additional movement of the shift key is therefore cushioned by the' spring W and the construction described enables me to employ a spring of the desired size and strength without interfering with other parts of the mechanism and the connections for the spring are such as to afford a very easy adjustment.

By reference to Fig. 2 it will be observed that the carriage mechanism may be. op-

erated from either side of the machine, two

shift keys being employed which are at- A single Shift locking lever is preferably used which is mounted to move independently of the rock shaft. It will of course be understood that when it is desired to print a series of capital letters the shift lock lever I may be 'depressed without having first depressed the shift key lever as the construction ofthe mechanism is such that the depression of the lever I will cause the shift lever H to be also depressed and held until it is operated to release the locking mechanism.

I claim as my invention:

1. In'case shifting mechanism for type- Writing machines, a shift key lever, a yieldingly mounted lever positively connected therewith and actuated by the shift key lever, and unyielding connections between said yieldingly mounted lever and the part to be shifted, thereby affording an independent additional movement of the shift key lever.

2.-In case-shifting mechanism for typewriting machines, a shift key lever, an aura iliary lever carried by the shift key lever and yieldingly mounted thereon, and con nections between said auxiliary lever and the part to be shifted for affording an independent additional depression of the shift key lever.

3. In case-shifting mechanism for type writing machines, a shift key lever, a yieldingly mounted auxiliary lever thereon and having a limited movement on the shift key lever, and connections between said auxiliary lever and the part to be shifted for affording an independent additional depres sion of the shift key lever.

at. In case shifting mechanism for typewriting machines, a shift key lever, a lever carried thereby and having a projecting arm, a spring connecting said arm with the key, and connections between the lever and the part to be shifted.

5. In case shifting mechanism for typewriting machines, a shift key lever having an upturned arm, a lever pivotally mounted on said arm and having a projecting arm, a

key lever, and connections between the le-' ver and the part to be shifted.

6. In case shifting mechanism for typewriting machines, a shift key lever having an upturned arm, a lever pivotally mounted on said arm and formed with a hole between its pivot and its upper end, a pin carried by the arm of the key lever and ex tending into said hole, a yielding connection between the arm of the lever and the shift key lever, and connections between the lever and the part to be shifted.

7. In case shifting mechanism for typewriting machines, a shift key lever having an upturned arm, a lever pivotally mounted on said arm and having a curved projecting arm, a spring attached at one end to the arm of the key lever and adapted to be attached at its other end to said curved arm, the cur vature of which latter arm is eccentric to the point of connection of said spring to the arm of the key lever, and connections between said pivotally mounted lever and the part to be shifted.

S. In case shifting mechanism for typewriting machines, a shift key lever carrying a yieldingly mounted lever, connections between said second lever and the part to be shifted, a latchfor holding the shifted part in position, and connections between the latch and said second lever.

9. In case shifting mechanism for typcwriting machines, a shift key lever carrying a yieldingly mounted lever, connections between said second lever and the part to be shifted, a latch for holding the shifted part in either normal or shifted position, and connections, between the latch and said second lever.

In testimony whereof I have hereunto subscribed my name.

GEORGE F. I-IANDLEY. 

